Finding the Fourth Proportional to 718,988.21, 992,563.28 and 447,143.68
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Solution
The fourth proportional to 718,988.21, 992,563.28 and 447,143.68 is: 617,281.88
Step by Step Solution
- Step 1: Write the proportion equation
718,988.21 : 992,563.28 = 447,143.68 : x - Step 2: Convert to fraction form
718,988.21/992,563.28 = 447,143.68/x - Step 3: Cross multiply
718,988.21x = 992,563.28 × 447,143.68 - Step 4: Simplify right side
718,988.21x = 443,818,395,416.35 - Step 5: Solve for x
x = 443,818,395,416.35/718,988.21 - Step 6: Final answer
x = 617,281.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.